achilles
- n a mythical Greek hero of the Iliad; a foremost Greek warrior at the siege of Troy; when he was a baby his mother tried to make him immortal by bathing him in a magical river but the heel by which she held him remained vulnerable--his `Achilles' heel'
achilles tendon
- n a large tendon that runs from the heel to the calf
achimenes
- n any plant of the genus Achimenes having showy bell-shaped flowers that resemble gloxinias
achira
- n canna grown especially for its edible rootstock from which arrowroot starch is obtained